they _____exercise after class at schoolA some time ,B sometime,C_英语解答

they _____exercise after class at school
A some time ,B sometime,C sometimes
理由充分

人气：244 ℃　时间：2020-04-04 14:52:21

解答

选C,注意区别：
some time:一段时间
sometime将来或过去的某个时间
sometimes 有时候